Error msg "server not found or server may be down" in rich client

Hi Folks,

When trying to connect Webi rich client to server machines( DEV,QA), i get error message "server not found or server may be down".

However I can log on to DEV and QA servers through their respectives launchpad URL's, with authentication type as SAP.

I have updated text file with the IP addresses and host names of DEV and QA, but still issue occur.

Please suggest if any port issue might be there.

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Any help would be appreciated.

Vizit